Every jump in net performance I've had has been significant in number, and until the last one, in "feel".
My previous, which was just hotspotting the LTE off my phone for a few years, I would get about 10-14Mbps down, and everything was fine... videos took a discernible amount of time to download, but that was a relatively rare thing, and it was only 5-10 seconds most of the time.
Now with a "5G home internet" (which according to the cell monitor app it's really a very fast 4G LTE, idk) that's 2-300Mbps, I can set a funny video to download, switch apps and send it to someone and the download is done before I get to the place where I can send it.
For everything else, like real work, I don't notice a difference... in fact, for most of my work things got better as soon as I stopped using Starband (geostationary satellite up & down) because of the killer latency - the T1 line I moved to at that point filled every need, only the emergence of so much photo & video sharing in non-work has made any difference to what I use.